FreePBX
FreePBX is an open-source graphical user interface (GUI) and management platform for configuring and managing Asterisk-based private branch exchange (PBX) systems. It provides a web-based interface that simplifies the setup, administration, and maintenance of VoIP phone systems, including features like call routing, voicemail, and conferencing. It is widely used by businesses and organizations to deploy and operate their own telephony infrastructure.
Developers should learn FreePBX when building or maintaining custom VoIP solutions, such as business phone systems, call centers, or unified communications platforms, as it offers a user-friendly way to manage complex Asterisk configurations without deep command-line expertise. It is particularly useful for scenarios requiring scalable telephony deployments, integration with other business tools, or compliance with specific regulatory requirements, as it supports extensive customization through modules and APIs.